Glass-cutting machine



(No Model.) 2 Sheets-Sheet 1.

H. 0. WOOD. V

GLASS CUTTING MACHINE.

No. 398,565. Patented Feb. 26, 1889.

man STATES PATENT OFFICE.

HARRY IVOOD, OF NEYV BRIGHTON, PENNSYLVANIA.

GLASS-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 398,565, dated February 26, 1889.

Application filed April 30, 1888. Serial No. 272,243. (No model.)

To ctZZ whom it may concern Be it known that I, HARRY C. \VOOD, of New Brighton, in the county of Beaver and State of Pennsylvania, have invented new and useful Improvements in Glass-Outting Machines; and I do hereby declare the following to be a full, clear, and exact description of said invention, reference being had to the accompanying drawings, and to the letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to in'iprovementsin glasscutting machines of the kind particularly adapted to cutting the flutes or facets on tumblers or other articles of glassware.

My invention consists in the construction and combination of parts hereinafter described, and pointed out in the claims.

' In the drawings which accompany and form a part of this specification, Figure 1 is a side elevation of the machine complete. Fig. 2 isaplan view of the same. Fig. 3 is an enlarged detail view of the glass-holding chuck and the means for automatically presenting it to the stone and rotating and stopping it. Fig. 4 is an enlarged sectional view taken on the line a: a; of Fig. 2, looking in the direction of the arrow and showing the lost-motion take-up device partly in section. Fig. 5 represents a modification of the lostmotion takeup device. the facets at the bottom of which have been cut with my machine.

A frame-work, A, having top rails, a, supports a water-tank, B, which receives the lower portion of the grindstone C, mounted on a shaft having bearings in suitable blocks on rails a. able on the rails a toward and from the cen ter between the ends of the rails.

The stone is rotated by means of a belt, 0, from a pulley, c, on counter-shaftC. Power may be applied to the counter-shaft or stoneshaft in any suitable manner.

At each end of the frame-work a track, D, is placed, and on this slides to and from the periphery of the stone a carriage, E. Said carriage E has bearings e for the shaft E, which shaft has at one end a ratchet-wheel, E and at the other end, a chuck, E the jaws Fig. 6 represents a glass tumbler,

The shaft-bearings may be adjustof which are faced internally with india-rubber or equivalent elastic material for grasping the tumbler or other article to be cut or ground.

The number of facets or flutes that will be ground corresponds with the number of teeth of the ratchet E, as hereinafter explained. Therefore I make the ratchet removable from the chuck-shaft, and propose to use rate-hots of varying numbers of teeth.

A pawl, F, is pivoted to a block, -f, that is secured to the track D, opposite the periphery of the ratchet, and said paw] is held in engagement with the ratchet-teeth by means of a small spring, f. Each movementof the carriage away from the stone causes the shaft E to be rotated a fraction of one revolution, corresponding with the relation of one tooth of the ratchet to the whole number of teeth. A suitable detent-pawl may be employed in connection with the ratchet.

A hook, 6 on the carriage E is engaged by the upper end of a spring, G, which tends to force the carriage toward the grindstone. The spring G is connected to a rockshaft, which has an arm, g, extending therefrom to and in engagement with a peg, g which may be set in any one of a series of holes formed in the side of the frame-work or top rails to adjust the power of the spring.

Thus far the description applies equally to the carriage and cooperating parts at each end of the frame-work.

Referring now to Fig. l and the right-hand portions of Figs. 1 and 2, the yielding screwcoupling or pitman will be described.

A sleeve-shaft, H, receives motion from the crank-pin I, which is adjustable to and from the center of crank-wheel I, by means of a slot or series of holes in said wheel in the ordinary manner. A rod, 71, having an eye at one end to fit over the crank-pin, and screwt-hreaded at the other end to lit the internal screw-thread of the end of sleeveshaft H, ad-

j ustably connects the crank with said sleeve- 9 shaft. The other end of the sleeve-shaft H is provided with a hole of less diameter than the internal bore of said sleeve, and through said hole freely passes a screw-threaded shaft, h, which is connected at one end to a lug on carriage E, and at the other end inside the sleeve with a nut, h and between the end of sleeve H and a washer and nut on said shaft, is coiled a spring, 71?. A belt connects pulley C on counter-shaft C with a pulley, 1 on the shaft of crankwheel I. chine, the revolution of crank-wheel I permits the carriage E to advance until the glass held by chuck E is pressed against the stone by the action of spring G. The adjustment of the glass against the stone before the crank-pin I reaches its extreme forward position. Further motion of the crank-pin and sleeve-shaft in the same direction is taken up by the coiled spring 74 \Vhen the crank-pin has passed its extreme forward position, the glass still remains in contact with the stone until the end of sleeve ll comes in contact with nut 71. when further rotation of crankwheel I forcibly draws the carriage backward against the action of spring G.

An arm, J, at one end surrounds thesleeve shaft II, and is adjusted thereupon by means of a set-screw. At the other end thearm J has a'pin entering a slot in the connectingrod J, which extends to the other endof the frame-work, where it is connected with the carriage at said other end by means of a lever, J the pin-and-slot connection above referred to serving-only to withdraw said carriage from the stone against the action of its spring G.

In Fig. 5 a modification of the lost-motion take-up is shown. To the lug on the carriage E is secured, by a pivot or rigidly, a shaft, K, having at its other end a stirrup, K, in which the crank-pin is received, and which stirrup has a'straight portion, 7a. wreaths; crank-pin is in contact with said straight portion, the carriage is withdrawn from the s't0ne,and when it has passed such contact the spring G forces the carriage forward. In this construction the connecting-rod J may also be used, as is obvious. That the connection between the shaft K and the lug on the carriage maybe rigid is obvious, since the'diameter of the circle traveled by the crank-pin in this construction is no greater than the width of the stirrup.

The automatic step will now be described.

A block, I., is secured to the carriage E, and in hearings on one side of this block is arranged a vertical bolt, L, which is curved at its upper end, and is adapted to enter a hole, 6', in shaft E. A contracting coiled spring, Z, (see Fig. 3,) surrounds the bolt and forces it downward, and the lower end of the bolt enters a hole, Z, in the track D when the upper end of the bolt enters hole 6', and the carriage is thus held from being carried toward the stone by spring G. The bolt is held out of engagement with both holes by means of a lever, L pivoted to the bolt and resting upon block L. Instead of the block L, a plate Around the shaft 72.,

. IHOTG.

may be secured to the bearings of shaft E, and such plate will be provided with an opening for the passage of bolt 1. and will serve as a bearing for the lever L In commencing operation the lever IP will be turned to support the bolt L out of en- Motion being imparted to the magagement with both holes, the hole 8 being then under the upper end of the bolt. \Vhen one flute or facet has been cut and the parts are in position as shown in Fig. 4, the operator will turn the lever to the position shown of the parts is such as to permit the contact in Fig. 0. This will permit the upper end of the bolt to ride on shaft E, and the operator can leave the machine and attend another or "hen the chuck-shaft E has made a complete revolution, and therefore one glass has been finished, the hole 6 arrives under the upper end of the bolt, receives it, and therefore" permits the lower end of the bolt-to fall or be forced by the spring Z into hole Zof track'D, thereby stopping the carriage from being again presented to the stone. As shown, each carriage is'provided with this automatic sto v V 'I he stone-shaft is of course removable, and therefore stones of dilfe'ren't peripheral'shape' may be used.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In a machine for cutting, grinding, or polishing glassware, the combination, with a grinding or polishing wheel, of a sliding carriage for supporting the glass and a yielding connection betweenthe carriage and motive power, substantially as described. I,

2. In a glass-cutting machine, the combina tion, with the stone, of; a reciprocating carriage for supporting the glass, a crank, a1 da yieldingpitinan' connecting the ,c'rankwith' the carriage, substantially as described..

3, In a glass-cutting 1na'chine, the coin tion, withthe stone and reciprocating we 1 support, of the sleeve-shaft, swa m connecting the sleeve-shaft with the crank and work support, and a spring interposed between the end of the sleeve-shaft and an adj ustable stop on one of the rods, substantially as described.

4. In a glass-cutting machine, the combination, with the stone, of a sliding work support, a spring for moving the support toward the stone, a yielding connection between the support and the motive power, and an automatic stop for arresting motion of the support, substantially as described.

5. In a glass-cutting machine, the combination, with the stone, of two sliding work-supports arranged 011 opposite sides of the stone, a lever and rod for connecting the two sup ports, and a yielding connection between one support and the motive power, substantially as described.

6. In a glass-cutting machine, a sliding carriage having a shaft provided with a chuck and a ratchet, said shaft being also provided with a hole in its circumference, a track llav- In testimony whereof I affix my signature in mg a hole and supporting a pawl, a springpresence of two subscribing Witnesses. bolt adapted to en 'age both of said holes, and T b HA 1 I. OD. a lever connected to send bolt and-adapted to RR 0 5 hold it out of engagement with said holes all \vih'lessesz combined sullstalntially as and for the pur- EDWARD ROWLAND, pose set forth. 1 JAMES RADCLIFFE. 

